WHITT. G. S. Ph.D. — Dept. of Zool., Univ. of Illinois, URBANA. 111. 61801. U.SA. 

 a Developmental genetics: 1. expression of differential gene function during early embryo- 

 genesis and cytodifferentiation with an emphasis on those genes responsible for isozymes. 



2. correlation of lactate dehydrogenase gene homology with the specificity of the gene 



activating mechanisms during development. 3. genetical, physical, and chemical analysis 



of the lactate dehydrogenase isozymes unique to the differentiated nervous system. 4. 



biochemical genetics of isozymes especially lactate dehydrogenase. Fundultts heteroditus. 



Scomber scombrus, Cynoscion regalis and tropical spp. (Teleostei) 

 b Epigenetic and genetic control of protein synthesis during cytodifferentiation with emphasis 



on the post-translational control of gene product (especially lactate dehydrogenase iso- 

 zymes), assembly and function. (Teleostei and other Vertebrata) 

 WHITTAKER, J. R. Ph.D. — The Wistar Inst., 36th St. at Spruce, PHILADELPHIA, 



Pa. 19104, U.S.A. 

 a Biochemical analysis of differentiation and metaplasia of embryonic eye tissues cultured 



in vitro. Gallus domesticus (Aves) 

 h Melanin biosynthesis and cell regulatory mechanisms in dfferentiating pigment cells. Ciona 



intestinalis, Styela spec. (Ascidiae), Gallus domesticus (Aves) 

 c Characterization of specific gene expression by primary and established cell cultures. 

 WHITTEN. W. K. D.Sc. B.V.Sc. — The Jackson Lab., BAR HARBOR, Me. 04609, 



U.S.A. 

 a Preimplantation stages of development in vivo and in vitro. Mus musculus 



(Rodentia) 

 WIDERSTEN, B. Fil.lic. — Zool. Inst., Univ. of Uppsala, Villavagen 9, UPPSALA, 



Sweden 

 a Larval development. (Scyphozoa) 

 WIERTZ (HOESSELS), Mrs. E. L. M. J. Ph.D. — Vet. Anat. and Embryol. Inst., State 



Univ. of Utrecht, Bekkerstr. 141, UTRECHT. Netherlands 

 a The influence of penicillin and streptomycin on early development. Gallus domesticus 



(Aves) 

 b Experiments on neural induction and pattern formation of rhombencephalic and anterior 



spinal cord region. Gallus domesticus (Aves) 

 WIGGLESWORTH, Sir V. B. Dr., Prof. (Emer.) — Dept. of Zool., Univ. of Cambridge, 



Downing St., CAMBRIDGE, England • 



a Mode of action of growth hormones. Rhodnius prolixus (Triatomidae, Hemiptera) 

 WIJFFELS, C. M. — Dept. of Anat. and Embryol, Univ. of Nijmegen, Geert Grooteplein 



Noord 21, NIJMEGEN, Netherlands 

 a An autoradiographic study of the development of the cerebellum. Cricetulus barabensis 



gviseus (Rodentia) 

 WILD, A. E. Ph.D. — Dept. of Zool.. Univ. of Southampton, SOUTHAMPTON S09 



5NH, England 

 a Protein transmission across foetal membranes. Oryctolagus cuniculus (Lagomorpha) 

 WILDE, A. G. de M.D.. Ph.D., Prof. — Dept. of Anat. and Embryol., State Univ. of 



Groningen. Oostersingel 69, GRONINGEN, Netherlands 

 WILDE, C. E., Jr. Ph.D., Prof. — Dept. of Biol., Grad. School of Arts and Sci.; Lab. of 



Histol. and Embryol., School of Dental Med., Univ. of Pennsylvania, PHILADELPHIA, 



Pa. 19104, U.S.A. • 



a Organogenesis in vitro (limb bud, cranial neural crest). Ambystoma maculatum 



(Urodela) 

 b Cellular differentiation (pigment cell; ectomesenchyme). Ambystoma maculatum (Urodela) 



1. causal biochemistry of cellular differentiation. 



2. differentiation of cytoplasmic fragments. 



c Morphology and causal biochemistry of striated muscle differentiation. Ambystoma macu- 

 latum (Urodela) 

 d Electrophoresis of molecular constituents of specific embryonic anlagen and cell types: 



fraction recovery and tissue culture of embryonic cells in the presence of selected fractions. 



Ambystoma maculatum (Urodela) 

 e Cytochimeras in tissue culture from disaggregated cells of embryos of different classes. 



Gallus spec. (Aves), Mus spec. (Rodentia) 

 f Role of probablistic processes in cellular differentiation. Gallus spec. (Aves), Mus spec. 



(Rodentia) 

 g Ontogeny of proteins and amino acids. Pundulus heteroditus (Teleostei) 

 h The energy pathways of differentiating systems. (Vertebrata) 

 i Informational macromolecules in early development and differentiation. ( Echinodermata, 



Vertebrata) 

 j The molecular basis of major and minor symmetry in embryogenesis. (Vertebrata) 

 WILDE, J. de Ph.D., Prof. — Lab. of Entomol., Agric. Univ., Binnenhaven 7, P.O.B. 62, 



WAGENINGEN, Netherlands 

 WILLIAM, Miss N. B.Sc. — Dept. of Zool., Ain Shams Univ., Fac. of Sci., Abassia, 



CAIRO, Egypt, U.A.R. 



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